The Study on Brittleness Evaluation of Chang 7 Reservoir in Longdong Area in Ordos Basin

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Li, Zhenhua^1 ; Zhang, Suya^2 ; Wang, Ruifei^3 ; Chen, Zhanjun^1 ; Li, Xiangyang^4

School of Energy Engineering, Longdong University, Qingyang, China^1

School of Foreign Languages, Longdong University, Qingyang, China^2

School of Petroleum Engineering, Xi'An University of Petroleum, Xi'an, China^3

Gansu Coalfield Geology Bureau, Qingyang, China^4

关键词: Brittleness index;    Mineral composition;    Ordos Basin;    Rock mechanics parameters;    Unconventional oil and gas;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/2/022079/pdf
DOI  :  10.1088/1755-1315/300/2/022079

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Brittleness is very important in the fracability evaluation and exploration of unconventional oil and gas. In this paper, the rock mechanics parameter method and the mineral composition method are used in order to calculate the brittleness index in Chang 7 reservoir in Longdong area in Ordos basin. The results show that the brittleness index calculated by rock mechanics parameters is 44.9%-62.23% and by mineral composition method is 52.5%. The brittleness indexes calculated by the two different methods are not greatly different, and the overall brittleness index is high, which indicate Chang 7 reservoir in Longdong area has high brittleness and good fracability.